cmd/internal/ld: support for -buildmode=shared

Change-Id: Id4997d611ced29397133f14def6abc88aa9e811e
Reviewed-on: https://go-review.googlesource.com/8252
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/src/cmd/internal/ld/link.go b/src/cmd/internal/ld/link.go
index 0a63567..47af2ae 100644
--- a/src/cmd/internal/ld/link.go
+++ b/src/cmd/internal/ld/link.go
@@ -74,6 +74,7 @@
 	Pcln        *Pcln
 	P           []byte
 	R           []Reloc
+	Local       bool
 }
 
 type Reloc struct {